Buggy code:
@ RunWith ( RetryRunner . class ) public class RandomDataTest { public RandomDataTest ( ) { } protected final long smallSampleSize = 1000 ; protected final double [ ] expected = new double [ ] { 250 , 250 , 250 , 250 } ; protected final int largeSampleSize = 10000 ; private final String [ ] hex = new String [ ] { "0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , "a" , "b" , "c" , "d" , "e" , "f" } ; protected RandomDataImpl randomData = null ; protected final ChiSquareTestImpl testStatistic = new ChiSquareTestImpl ( ) ; @ Test public void testNextIntExtremeValues ( ) { } @ Test public void testNextLongExtremeValues ( ) { } @ Test public void testNextUniformExtremeValues ( ) { } @ Test public void testNextIntIAE ( ) throws Exception { } @ Test public void testNextIntNegativeToPositiveRange ( ) throws Exception { } @ Test public void testNextIntNegativeRange ( ) throws Exception { } @ Test public void testNextIntPositiveRange ( ) throws Exception { } private void checkNextIntUniform ( int min , int max ) throws Exception { final Frequency freq = new Frequency ( ) ; for ( int i = 0 ; i < ( smallSampleSize ) ; i ++ ) { final int value = randomData . nextInt ( min , max ) ; Assert . assertTrue ( "nextInt<seq2seq4repair_space>range" , ( ( value >= min ) && ( value <= max ) ) ) ; freq . addValue ( value ) ; } final int len = ( max - min ) + 1 ; final long [ ] observed = new long [ len ] ; for ( int i = 0 ; i < len ; i ++ ) { observed [ i ] = freq . getCount ( ( min + i ) ) ; } final double [ ] expected = new double [ len ] ; for ( int i = 0 ; i < len ; i ++ ) { expected [ i ] = 1.0 // len ; } <START_BUG> TestUtils . assertChiSquareAccept ( expected , observed , 0.01 ) ; <END_BUG> } @ Test public void testNextLongIAE ( ) { } @ Test public void testNextLongNegativeToPositiveRange ( ) throws Exception { } @ Test public void testNextLongNegativeRange ( ) throws Exception { } @ Test public void testNextLongPositiveRange ( ) throws Exception { } private void checkNextLongUniform ( int min , int max ) throws Exception { } @ Test public void testNextSecureLongIAE ( ) { } @ Test public void testNextSecureLongNegativeToPositiveRange ( ) throws Exception { } @ Test public void testNextSecureLongNegativeRange ( ) throws Exception { } @ Test public void testNextSecureLongPositiveRange ( ) throws Exception { } private void checkNextSecureLongUniform ( int min , int max ) throws Exception { } @ Test public void testNextSecureIntIAE ( ) { } @ Test public void testNextSecureIntNegativeToPositiveRange ( ) throws Exception { } @ Test public void testNextSecureIntNegativeRange ( ) throws Exception { } @ Test public void testNextSecureIntPositiveRange ( ) throws Exception { } private void checkNextSecureIntUniform ( int min , int max ) throws Exception { } @ Test public void testNextPoisson ( ) { } @ Test public void testNextPoissonConsistency ( ) throws Exception { } public void checkNextPoissonConsistency ( double mean ) throws Exception { } @ Test @ Retry ( 3 ) public void testNextHex ( ) { } @ Test public void testNextSecureHex ( ) { } @ Test public void testNextUniformIAE ( ) { } @ Test public void testNextUniformUniformPositiveBounds ( ) throws Exception { } @ Test public void testNextUniformUniformNegativeToPositiveBounds ( ) throws Exception { } @ Test public void testNextUniformUniformNegaiveBounds ( ) throws Exception { } @ Test public void testNextUniformUniformMaximalInterval ( ) throws Exception { } private void checkNextUniformUniform ( double min , double max ) throws Exception { } @ Test public void testNextUniformExclusiveEndpoints ( ) { } @ Test public void testNextGaussian ( ) { } @ Test public void testNextExponential ( ) throws Exception { } @ Test public void testConfig ( ) { } @ Test public void testNextSample ( ) { } @ SuppressWarnings ( "unchecked" ) private int findSample ( Object [ ] u , Object [ ] samp ) { } @ Test public void testNextPermutation ( ) { } private int findPerm ( int [ ] [ ] p , int [ ] samp ) { } @ Test public void testNextInversionDeviate ( ) throws Exception { } @ Test public void testNextBeta ( ) throws Exception { } @ Test public void testNextCauchy ( ) throws Exception { } @ Test public void testNextChiSquare ( ) throws Exception { } @ Test public void testNextF ( ) throws Exception { } @ Test public void testNextGamma ( ) throws Exception { } @ Test public void testNextT ( ) throws Exception { } @ Test public void testNextWeibull ( ) throws Exception { } @ Test public void testNextBinomial ( ) throws Exception { } @ Test public void testNextHypergeometric ( ) throws Exception { } @ Test public void testNextPascal ( ) throws Exception { } @ Test public void testNextZipf ( ) throws Exception { } @ Test public void testReseed ( ) { } }

Fix:
TestUtils . assertChiSquareAccept ( expected , observed , 0.001 ) ;